1 Alvissa: For once I don't think we have too much to worry about. You can't burn water.
2 Kyros: Sure you can. You just add fire to water. Standard elemental theory.
3 Alvissa: Doesn't that simply produce steam?
4 Kyros: Steam is just another name for the smoke you get when you burn water. Why is this so hard to understand? 300 mana, by the way.

In our modern scientific world, steam itself is an invisible gas, the gaseous phase of water. The visible clouds of "steam" we often see coming off boiling water are actually given their appearance by the condensation of liquid water droplets. Essentially like clouds or fog.